Workability improved by adding

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Workability improved by adding

A. Fly ash

B. Hydrated lime

C. Calcium chloride

D. All the above

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Ordinary Portland cement is manufactured from

A. Lime stone and clay

B. Gypsum and lime

C. Pozzolana

D. Lime, pozzolana and clay

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Pick up the correct statement from the following:

A. Lime in excess, causes the cement to expand and disintegrate

B. Silica in excess, causes the cement to set slowly

C. Alumina in excess, reduces the strength of the cement

D. All the above

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In a pile of length l, the points of suspension from ends for lifting it are located at

A. 0.207 l

B. 0.25 l

C. 0.293 l

D. 0.333 l

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The minimum percentage of chemical ingredient of cement is that of

A. Magnesium oxide

B. Iron oxide

C. Alumina

D. Lime

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Particles of 0.002 mm size are that of

A. Clay

B. Sand

C. Gravel

D. None of these

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The minimum cover in a slab should neither be less than the diameter of bar nor less than

A. 10 mm

B. 15 mm

C. 25 mm

D. 13 mm

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A concrete having a slump of 6.5 cm, is said to be

A. Dry

B. Earth moist

C. Semi-plastic

D. Plastic

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Curing a concrete for long period ensures better

A. Volume stability

B. Strength

C. Water resistance

D. All the above

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Concrete mainly consists of

A. Cement

B. Aggregates

C. Water

D. All the above

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The slab is designed as one way if the ratio of long span to short span is

A. Less than 1

B. Between 1 and 1.5

C. Between 1.5 and 2

D. Greater than 2

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Joints in concrete structures, are provided

A. To reduce the tensile stresses likely to be developed due to evaporation of water

B. To minimise the change in the dimensions of the slab

C. To minimise the necessary cracking

D. All the above

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During erection, the pile of length l is supported by a crane at a distance of

A. 0.207 l

B. 0.293 l

C. 0.707 l

D. 0.793 l From the driving end of pile which rests on the ground

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The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

A. 0.367 x_u

B. 0.416 x_u

C. 0.446 x_u

D. 0.573 x_u

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For a good concrete

A. Aggregates should be hard and durable

B. Water should be free from organic materials

C. Cement should be sufficient to produce the required strength

D. All the above

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Le-Chatelier's apparatus is used for testing

A. Soundness of cement

B. Hardness of cement

C. Strength of cement

D. Durability of cement

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Curing

A. Reduces the shrinkage of concrete

B. Preserves the properties of concrete

C. Prevents the loss of water by evaporation

D. All of the above

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Horizontal construction joints in concrete walls are generally provided at

A. Soffit level

B. Window sill level

C. Floor level

D. All the above

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Pick up the correct statement from the following:

A. Construction joints in columns are provided a few cm below the junction of beam

B. Construction joints in columns are provided at the bottom hunching

C. Construction joints in beams and slabs are provided within middle third

D. All the above

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Too wet concrete may cause

A. Weakness of concrete

B. Excessive laitance

C. Segregation

D. All the above

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Pick up the incorrect statement from the following. While performing preliminary test on concrete

A. Proportions of the material and water should be the same as to be used at the work site

B. Cement should be mixed by hand in order to maintain uniformity

C. Concrete mix should be stored in air-tight containers

D. Concrete ingredients should be kept at a temperature of 37° ± 2°C

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According to IS: 4561978, the maximum reinforcement in a column is

A. 2 %

B. 4 %

C. 6 %

D. 8 %

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Normally pre-stressing wires are arranged in the

A. Upper part of the beam

B. Lower part of the beam

C. Center

D. Anywhere

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The surface where two successive placements of concrete meet, is known as

A. Contraction joint

B. Expansion joint

C. Construction joint

D. Both (a) and (b)

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If fineness modulus of sand is 2.5, it is graded as

A. Very fine sand

B. Fine sand

C. Medium sand

D. Coarse sand

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The size of fine aggregates does not exceed

A. 2.75 mm

B. 3.00 mm

C. 3.75 mm

D. 4.75 mm

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The condition not applicable to water cement ratio law, is

A. Internal moisture conditions on hydration continue till complete strength is gained

B. Concrete specimens may be tested at any temperature

C. Concrete specimens need be of same age

D. Concrete specimens need be of same size

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The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on

A. Top face perpendicular to wall

B. Bottom face perpendicular to wall

C. Both top and bottom faces perpendicular to wall

D. None of the above

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Pick up the correct statement from the following:

A. Continuous grading is not necessary for obtaining a minimum of air voids

B. The omission of a certain size of aggregate is shown by a straight horizontal line on the grading curve

C. The omission of a certain size of aggregate in concrete increases the workability but also increases the liability to segregation

D. All the above

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Pick up the correct statement from the following:

A. The concrete gains strength due to hydration of cement

B. The concrete does not set at freezing point

C. The strength of concrete increases with its age

D. All the above

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In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

A. Only (i)

B. Only (ii)

C. Both (i) and (iv)

D. Both (ii) and (iii)

Discuss this answer

Accepted Answer

D. All the above

Workability improved by adding

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Ordinary Portland cement is manufactured from

Pick up the correct statement from the following:

In a pile of length l, the points of suspension from ends for lifting it are located at

The minimum percentage of chemical ingredient of cement is that of

Particles of 0.002 mm size are that of

The minimum cover in a slab should neither be less than the diameter of bar nor less than

A concrete having a slump of 6.5 cm, is said to be

Curing a concrete for long period ensures better

Concrete mainly consists of

The slab is designed as one way if the ratio of long span to short span is

Joints in concrete structures, are provided

During erection, the pile of length l is supported by a crane at a distance of

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)

For a good concrete

Le-Chatelier's apparatus is used for testing

Curing

Horizontal construction joints in concrete walls are generally provided at

Pick up the correct statement from the following:

Too wet concrete may cause

Pick up the incorrect statement from the following. While performing preliminary test on concrete

According to IS: 4561978, the maximum reinforcement in a column is

Normally pre-stressing wires are arranged in the

The surface where two successive placements of concrete meet, is known as

If fineness modulus of sand is 2.5, it is graded as

The size of fine aggregates does not exceed

The condition not applicable to water cement ratio law, is

The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on

Pick up the correct statement from the following:

Pick up the correct statement from the following:

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

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Workability improved by adding

Correct Answer :

Show all Concrete Technology and Design MCQ

Related Questions

Ordinary Portland cement is manufactured from

Pick up the correct statement from the following:

In a pile of length l, the points of suspension from ends for lifting it are located at

The minimum percentage of chemical ingredient of cement is that of

Particles of 0.002 mm size are that of

The minimum cover in a slab should neither be less than the diameter of bar nor less than

A concrete having a slump of 6.5 cm, is said to be

Curing a concrete for long period ensures better

Concrete mainly consists of

The slab is designed as one way if the ratio of long span to short span is

Joints in concrete structures, are provided

During erection, the pile of length l is supported by a crane at a distance of

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where xu is the depth of neutral axis at the limit state of collapse)

For a good concrete

Le-Chatelier's apparatus is used for testing

Curing

Horizontal construction joints in concrete walls are generally provided at

Pick up the correct statement from the following:

Too wet concrete may cause

Pick up the incorrect statement from the following. While performing preliminary test on concrete

According to IS: 4561978, the maximum reinforcement in a column is

Normally pre-stressing wires are arranged in the

The surface where two successive placements of concrete meet, is known as

If fineness modulus of sand is 2.5, it is graded as

The size of fine aggregates does not exceed

The condition not applicable to water cement ratio law, is

The main reinforcement in the heel of a T-shaped R.C. retaining wall is provided on

Pick up the correct statement from the following:

Pick up the correct statement from the following:

In the design of a front counterfort in a counterfort retaining wall, the main reinforcement is provided on (i) Bottom face near counterfort (ii) Top face near counterfort (iii) Bottom face near centre of span (iv) Top face near centre of span The correct answer is

Also checkout

The centroid of compressive force, from the extreme compression fiber, in limit state design lies at a distance of (Where x_u is the depth of neutral axis at the limit state of collapse)